please reply to this
i found OpenGL registry while i am surfing

and on clicking at GL_BLA_abc_xyz

a text file open

where
BLA_abc_xyz
list ofname of some people

and look like long file

and some OpenGL function name
and a OpenGL's glFunctionNameEXT/ARB
written



Q1is use of these function our experiment(may damage system)
Q2 i have find that most api have Docs/mannual almost those of Open
is there a way Just read Docs/specs and hit up the floor
Q3.is there need a lot of practise on these function so tha
get one working(cause all tutorial i found only checks availability of Extension not their function are used)


(i hope it not waste your time & alot of thank for just reading my post and also for thinking on my Q)